Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 937 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) test it only once
2. 2.🧪 A paper bridge was tested three times. It held 230 g, 90 g and 190 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) test it only once (d) use a new load each time
4. 4.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
6. 6.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design C (b) design B (c) design A
8. 8.🧪 A paper bridge was tested three times. It held 250 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) guess, do not measure (d) hide a failed test
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
12. 12.True or false: to record every result is poor testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change lots at once (d) use a new load each time
17. 17.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to test it only once is poor testing. (a) False (b) True
23. 23.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
24. 24.True or false: to use the same load is good testing. (a) False (b) True
25. 25.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
28. 28.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) read the challenge rules
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
31. 31.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use a new load each time (d) measure the same way
33. 33.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) change only one thing (d) guess, do not measure
34. 34.True or false: to change only one thing is poor testing. (a) False (b) True
35. 35.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
36. 36.True or false: to measure the same way is poor testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 230 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
39. 39.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws

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